Video footage from the reception showed guests at the small affair erupting in shrieks and cheers. The bride and groom also asked their guests to keep the news quiet until Guthrie could announce it herself on "Today."

"We are so excited, overjoyed and feel so blessed," the newlywed mom-to-be said on the show. "It's funny, 'cause we set the wedding date, I bought my dress, and then I found out. So I've been doing a little praying that I would fit in it, and it all worked out."

The baby is due in late summer, and Guthrie said she's relieved that the pregnancy is public knowledge.

"We've been together four years, so, as he said, no one will accuse us of rushing into anything," Guthrie said on the air, adding that Feldman popped the question while they had been vacationing in Turks & Caicos.